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Vishay General Semiconductor - Diodes Division TPSMP12AHE3/85A
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- Part No.:
- TPSMP12AHE3/85A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-220AA
- Datasheet:
-
TPSMP12AHE3/85A.pdf
- Description:
- TVS DIODE 10.2VWM 16.7VC DO220AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,478
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Product details
Overview
TPSMP12AHE3/85A from Vishay General Semiconductor is a unidirectional automotive-grade transient voltage suppressor (TVS) diode in DO-220AA (SMP) package, with 11.4 V to 12.6 V breakdown voltage (VBR), 1.0 V standoff voltage (VWM), 1.0 µA max reverse leakage at VWM, and 18.0 A peak pulse current (IPPM) under 10/1000 µs waveform - designed for robust ESD and surge protection of automotive sensor signal lines.
For engineers reviewing the TPSMP12AHE3/85A datasheet, TPSMP12AHE3/85A pinout, TPSMP12AHE3/85A application, or TPSMP12AHE3/85A equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, clamping performance (VC = 16.7 V at IPPM), thermal derating behavior, and direct alternatives for automotive power rail and signal line protection.
Technical Context
The TPSMP12AHE3/85A employs patented PAR oxide-passivated chip construction for stable breakdown characteristics and low incremental surge resistance. Its unidirectional configuration enables precise anode-to-cathode clamping on positive transients only, with fast response time (<1 ns) and minimal junction capacitance (typ. 120 pF at 0 V).
Rated for 185 °C maximum junction temperature and MSL Level 1 (260 °C reflow), it supports high-reliability automotive deployment on FR-4 PCBs with 5.0 × 5.0 mm copper pads per terminal. The device meets RoHS 2002/95/EC and WEEE 2002/96/EC, and is qualified to AEC-Q101 stress test standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 11.4 V min / 12.6 V max at 1 mA - defines precise clamping initiation threshold for overvoltage events |
| Standoff Voltage VWM | 1.0 V - ensures no conduction during normal operation of low-voltage sensor interfaces |
| Clamping Voltage VC | 16.7 V at 18.0 A (10/1000 µs) - limits downstream IC voltage exposure during surge |
| Peak Pulse Power PPPM | 300 W - sustains transient energy without failure under defined waveform conditions |
| Reverse Leakage IR | 1.0 µA max at VWM - prevents signal distortion or bias shift in high-impedance circuits |
| Junction Temperature Range | -65 °C to +185 °C - enables operation in under-hood automotive environments |
| AEC-Q101 Qualified | Yes - validated for automotive reliability including HTOL, TC, UHAST, and ESD testing |
Pinout & Package
Package: DO-220AA (SMP), surface-mount, ultra-low profile (1.0 mm typical height), matte tin-plated leads, cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input reference node for unidirectional clamping | Connected to protected line; conducts only when voltage exceeds VBR relative to cathode |
| Cathode | Clamp return path to ground or supply rail | Color-banded end; ties to system ground or higher-potential rail depending on protection topology |
Key Features
| Feature | Design Value |
|---|---|
| Patented PAR oxide passivation | Ensures stable VBR over lifetime and temperature, eliminating parameter drift in harsh environments |
| Low incremental surge resistance | Minimizes VC overshoot during fast transients, improving protection margin for sensitive ASICs |
| MSL Level 1 rating | Supports standard SMT reflow without moisture-related cracking or delamination |
| Automotive-grade reliability | AEC-Q101 qualification confirms suitability for engine control, ADAS sensors, and body electronics |
| Ultra-low profile (1.0 mm) | Enables placement in space-constrained modules such as radar front-ends and camera ECUs |
Applications
| Automotive Sensor Signal Protection | Engine Control Unit (ECU) Power Rail Clamping |
|---|---|
|
Use Scenario: Protecting LIN bus or analog sensor outputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS placed between sensor output and microcontroller input to clamp positive transients before they reach ADC or comparator inputs. Use Value: Maintains signal integrity with 1.0 µA leakage at 1.0 V VWM, while limiting clamped voltage to 16.7 V during 18 A surges. |
Use Scenario: Safeguarding 5 V or 3.3 V power rails in ECUs against battery line transients and alternator load dump. IC Role / Device Role / Timing Role: Parallel-connected TVS across regulated supply rail to shunt excess energy during ISO 16750-2 pulse 5a (100 V, 400 ms). Use Value: 300 W peak power rating and 185 °C TJ max enable sustained operation in high-ambient under-hood locations. |
| ADAS Camera Module ESD Protection | Body Control Module (BCM) Communication Lines |
|
Use Scenario: Shielding MIPI CSI-2 data lines in automotive cameras from human-body-model (HBM) ESD events up to ±15 kV. IC Role / Device Role / Timing Role: Low-capacitance (120 pF) unidirectional TVS placed at connector interface to divert ESD current away from serializer/deserializer ICs. Use Value: Fast <1 ns response time and 16.7 V clamping prevent latch-up or damage to image signal processors during field ESD exposure. |
Use Scenario: Protecting CAN FD or LIN physical layer transceivers from coupled transients in vehicle door modules and lighting controllers. IC Role / Device Role / Timing Role: TVS installed on transceiver VCC and signal pins to absorb burst energy from nearby motor switching noise. Use Value: AEC-Q101 qualification and 1.0 µA leakage ensure long-term stability in 15-year automotive service life requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ12A-E3/5AT | DO-214AC (SMA) package; 12.2–13.5 V VBR; 400 W PPPM; 27.2 V VC at 12.3 A | Higher clamping voltage and larger footprint; less suitable for space-constrained automotive modules | Select SMAJ12A-E3/5AT only if board layout allows larger package and higher VC is acceptable for protected ICs. |
| TPSMP12AHM3/85A | Same DO-220AA package and electrical specs; differs only in tape-and-reel packaging (85A vs. HM3 suffix denotes different reel size and carrier) | No functional difference; identical AEC-Q101 qualification and performance | TPSMP12AHM3/85A is a form-fit-function replacement; choose based on procurement channel availability and reel quantity preference. |
Compared with SMAJ12A-E3/5AT, TPSMP12AHE3/85A offers lower clamping (16.7 V vs. 27.2 V) and smaller footprint, critical for modern ADAS modules; versus TPSMP12AHM3/85A, it shares identical electrical and mechanical behavior - differing only in packaging logistics.
Availability
TPSMP12AHE3/85A is available at Aetrix Electronics and suitable for automotive sensor protection, ECU power rail clamping, ADAS camera ESD hardening, and BCM communication line safeguarding requiring stable component supply across production lifecycles.
Supply support for TPSMP12AHE3/85A includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Vishay General Semiconductor designs and manufactures discrete semiconductors, specializing in power, sensing, and protection devices for automotive, industrial, and computing markets.
The TPSMP12AHE3/85A belongs to Vishay's eSMP™ series of high-power-density TVS diodes, engineered specifically for AEC-Q101-compliant automotive transient suppression with minimal footprint and thermal robustness.
FAQ
What is the AEC-Q101 qualification status of TPSMP12AHE3/85A?
The TPSMP12AHE3/85A is fully AEC-Q101 qualified, having passed stress tests including high-temperature operating life (HTOL), temperature cycling (TC), unbiased highly accelerated stress test (UHAST), and human-body-model (HBM) ESD. This certification confirms its suitability for automotive powertrain, chassis, and ADAS applications where reliability over 15 years is required. TPSMP12AHE3/85A meets all applicable AEC-Q101 test conditions per revision D.
Does TPSMP12AHE3/85A support bidirectional transient suppression?
No, TPSMP12AHE3/85A is strictly unidirectional - it clamps only positive transients relative to its cathode. It must be oriented with cathode toward the protected circuit's higher potential (e.g., VCC or signal high side). For bidirectional protection, a separate device like TPSMP12AHM3/85A configured in back-to-back arrangement or a dedicated bidirectional TVS would be required. TPSMP12AHE3/85A's datasheet explicitly states "Uni-direction only" in features.
What is the maximum clamping voltage of TPSMP12AHE3/85A under standard test conditions?
The maximum clamping voltage (VC) of TPSMP12AHE3/85A is 16.7 V, measured at 18.0 A peak pulse current (IPPM) using the standardized 10/1000 µs double-exponential waveform. This value is guaranteed across the full operating temperature range and forms the basis for downstream IC overvoltage margin design. TPSMP12AHE3/85A achieves this low VC via patented PAR oxide passivation and low incremental surge resistance.
Can TPSMP12AHE3/85A be used in non-automotive applications?
Yes, TPSMP12AHE3/85A may be used in industrial or consumer applications requiring high-reliability transient suppression, but its design focus and qualification are automotive-specific. Its 185 °C junction rating, AEC-Q101 validation, and low-profile DO-220AA package make it especially valuable in demanding environments - however, cost and availability may favor non-automotive-rated alternatives like SMAJ12A for less critical uses. TPSMP12AHE3/85A remains functionally compatible outside automotive contexts.
What does the 'HE3/85A' suffix indicate in TPSMP12AHE3/85A?
The 'HE3' suffix denotes RoHS-compliant, high-reliability, automotive-grade construction with JESD201 Class 2 whisker resistance; '85A' specifies the packaging format: 13-inch diameter plastic tape-and-reel containing 10,000 units. This differs from '84A' (7-inch reel, 3,000 units) and 'HM3' (alternate reel specification). All HE3-suffix variants share identical electrical and thermal specifications - the suffix reflects only compliance and packaging, not performance variation. TPSMP12AHE3/85A is fully interchangeable electrically with other HE3 versions.
TPSMP12AHE3/85A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-220AA
- Series:
- PAR®, eSMP®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 10.2V
- Voltage - Breakdown (Min):
- 11.4V
- Voltage - Clamping (Max) @ Ipp:
- 16.7V
- Current - Peak Pulse (10/1000µs):
- 18A
- Power - Peak Pulse:
- 300W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 185°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-220AA (SMP)
TPSMP12AHE3/85A FAQ
1.How can I place an order for TPSMP12AHE3/85A through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMP12AHE3/85A on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TPSMP12AHE3/85A reliable?
The price and inventory of TPSMP12AHE3/85A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMP12AHE3/85A is usually 5 days.
3.What payment methods are accepted for TPSMP12AHE3/85A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMP12AHE3/85A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMP12AHE3/85A?
TPSMP12AHE3/85A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMP12AHE3/85A order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TPSMP12AHE3/85A?
For technical support, including TPSMP12AHE3/85A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMP12AHE3/85A requirements.
6.How does Aetrix verify that TPSMP12AHE3/85A is sourced from the original manufacturer or authorized distributors?
All TPSMP12AHE3/85A products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TPSMP12AHE3/85A meets industry standards.
7.What is the process for return or replacement of TPSMP12AHE3/85A?
All TPSMP12AHE3/85A units undergo pre-shipment inspection (PSI). If there is an issue with TPSMP12AHE3/85A, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TPSMP12AHE3/85A part is unused and in its original packaging.
Return procedure for TPSMP12AHE3/85A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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